網膜細胞腫retinocytomaの1症例

A case of retinocytoma

　18歳男性の左眼の乳頭上方に3乳頭径大で，硝子体内へ半球状に隆起した黄白色の網膜腫瘍を認めた．臨床検査成績と経過から，臨床的に網膜細胞腫retinocytomaと思われた．現在まで6カ月間無治療で経過観察しているが所見に変化はない．網膜細胞腫は網膜芽細胞腫の良性型とされている．本腫瘍を紹介し，診断の本拠を述べた．

A solitary, non-symptomatic retinal tumor was detected in the left eye of a 18-year-old male. The tumor resembled retinoblastoma in its regressed state following irradiation. The tumor was located superior to the optic disc, was sharply demarcated, and was prominently elvated into the vitreous. It was grayish-white and showed a soft surface struc-ture without calcification. The tumor was surround-ed by atrophy and clumping of retinal pigment epithelium. Fluorescein angiography showed hypo-fluorescence in the early stage and dye staining of the tumor in the late phase. The tumor remained stationary during the following 6 months. The fam-ily history was negative for retinoblastoma.We diagnosed this case as an almost typical instance of retinoma or retinocytoma as described by Gallie and Zimmerman.

Rinsho Ganka (Jpn J Clin Ophthalmol) 41(6) : 685-688, 1987